Measurement of the spin correlation parameter Aoonn(pp) in a large angular region between 0.88 and 2.7 GeV

Using polarized proton beam and the Saclay frozen spin polarized target, the parameter Aoonn(pp) was measured at 0.88, 1.1, 1.3, 1.6, 1.8, 2.1, 2.4 and 2.7 GeV. The measurements carried out at the first two energies in the angular region 24 deg ≤ ΘCM ≤ 60 deg complete the previous data at ΘCM from 45 deg to 90 deg. Between 1.3 and 2.7 GeV the measurements were performed in two overlapping angular regions: 25 deg ≤ ΘCM ≤ 55 deg and 50 deg ≤ ΘCM ≤ 95 deg. The value of Aoonn at 90 deg CM decreases from Aoonn ≅ 0.57 at 0.88 GeV to Aoonn ≅ 0.42 at 1.3 GeV and starts to rise again. It reaches its maximum of ≅ 0.52 at 1.8 MeV and decreases to ≅ 0.35 at 2.7 GeV